PT-2022-3708 · Nginx · Nginx Njs

Dramthy · Published 2022-07-18 · Updated 2022-10-21 · CVE-2022-34027

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Nginx NJS version 0.7.4

Description The issue is related to a buffer overflow in the njs value property() function of the njs interpreter in the Nginx server. This could allow a remote attacker to execute arbitrary code. The problem is caused by a segmentation violation via the njs value property function at njs value.c.

Recommendations For Nginx NJS version 0.7.4, consider disabling the njs value property() function as a temporary workaround until a patch is available. Restrict access to the njs interpreter to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2022-04496

CVE-2022-34027

Affected Products

Nginx Njs

References · 6

• 🔥 https://github.com/nginx/njs/issues/504 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-34027 · Security Note
• https://osv.dev/vulnerability/CVE-2022-34027 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-04496 · Security Note
• https://t.me/cvenotify/33710 · Telegram Post
• https://t.me/cibsecurity/46511 · Telegram Post